Pipe clamp



Feb. 1, 1944. J. v. WESCOTT 2,340,444

PIPE CLAMP Filed May 4, 1940 2 Sheets-Sheet l {52 W Wesco if a wm Feb.1, 1944. J. v. WESCOTT PIPE CLAMP Fil ed May 4, 1940 2 Sheets-Sheet 2Patented Feb. 1, 1944 PIPE CLAMP Jay V. Wescott, Chicago, Ill.,assignor, by mesne assignments, of, one-half v to Florence W.

Wescott, Chicago, Ill.

Application May 4, 1940, Serial No. 333,412

6 Claims.

My invention relates particularly to pipe clamps which are used tosecure pipes on railway'rolling stock, although not limited to this usealone.

The general object of my invention resides in the provision of a noveland practical pipe clamp 'for securing a pipe extending through anopening in a support and which securely clamps the pipe and at the sametime acts to clamp the clamp members in the opening of the supportwithout necessitating riveting or bolting any of the clamp members onthe support, to the end of simple and convenient installation. V Withthis object in view my invention consists in certain features of noveltyin the construction, combination and arrangement of parts by which thesaid object and certain other objects, hereinafter appearing, areeffected, all as fully described with reference to the accompanyingdrawings and more particula y pointed out in the appended claims.

In the said drawings- Figure 1 is an end elevation of a pipe clampembodying my invention and showing the same installed on a support witha pipe clamped there- 1n; Figure 2 is a slightly distorted view in sideelevation substantially on the line 2-2 of Figure l with the supportshownin section; Figure 3 is an end elevation of a pipe clamp embodyinganother form of my invention and showing the same installed on a supportwith a pipe clamped therein;

Figure 4 is a sectional view substantially on the line 4 -4 of Figure 3;

Figure 5 is a partial sectional view substantially on the line 5-5 ofFigure 4; and

Figure 6 is a partial sectional view tially on the line 66 of Figure 4.V Referring to Figures 1 and 2 of the drawings, I designates a pipeclamp member having a segment shaped portion 2 which provides a concavepipe'engaging surface 3 and a convex'surface 4 eccentric to the axis ofthe pipe engaging surface 3.

'A second pipe clamp member 5 is of generally crescent shape andprovides a concave pipe en gaging surface 6 to the end that a pipe 1 maybe engaged between the pipe engaging surfaces 3 and 5, the clamp membersbeing relatively movable angularly about the axis of the pipe engagedtherebetween. The clamp member 5 also provides a convex surface 8eccentric to the axis of the pipe engaging surface. thereof. 1 1 Thepipe clamp member 5 is provided with; a

surface" 9 facing and spa d from the concave substanpipe engagingsurface 6, and this surface 9 is engageable on a convex cam surface I Ion the clamp member I to effect relative pipe clamping movement of theclamp members with relative angular movement thereof about the axis ofthe pipe I therebetween.

The pipe clamp members I and 5' are engageable in a relativelylargeopening I2 of a support I3 through which the pipe-l extends withthe pipe engaged between the clamp members, the convex surfaces 4 and 8of the clamp members being engageable with the edge of the opening. Theopposite engaging surfaces 3 and 4- of the clamp member I are spaceddifferently from the opposite engaging surfaces I5 and 8 of the clampmember 5 whereby to simultaneously expand the clamp members in theopening I2 and to contract the same on the pipe I with relative angularmovement of the clamp members, the cam surfaces 9 and II serving also toclamp the pipe between the clamp members with relative angular movementthereof.

One end of the pipe clamp member 5 is provided with an apertured radiallug I4 and the clamp member I is also provided with an apertured radiallug I5. A screw bolt I6 is engaged through the apertures of the lugs I4and I5 to effect the aforesaid relative angular movement of the clampmembers aboutthe axis of the pipe to expand the clamp members in thesupport opening I2 and to contract the same on the pipe, thus securingthe pipe on the support. The screw bolt I6 is self-locking and maintainsthe clamp members in clamping relation, spacing washers "being engagedon the bolt between the lugs and I5 to limit the extent of clampingmovement of the clamp members.

Opposing shoulders I8 on the clamp member I engage the support I3therebetween to position this clamp member longitudinally of the pipeaxis, and this clamp member is provided with opposing cam shoulders I9engaging the clamp member 5 therebetween to position this clamp memberlongitudinally of the pipe axis, the shoulders I9 being disengageablewith relative angular movement of the clamp members into non-clampingposition.

In installing the device, the clamp member I is first engaged in thesupport opening I2 with the shoulders I8 engaged with the support, thepipe I being laterally displaced for this purpose. Subsequently, theclamp member 5 is engaged in thesupportopening and the clamp members arethen clamped by relative angular movement engageable radially of thethereof. Removal of the device is effected by a reverse procedure.

Thus it will be observed that an effective clamping device is providedwhich does not require bolting or riveting of any of the parts on thesupport member, with consequent ease and convenience in installation andremoval.

The form of my invention illustrated in Figures 3 to 6 inclusive isgenerally similar to the form shown in Figures 1 and 2 and comprises asfollows.

Referring to Figures 3 to 6 inclusive, one pipe clamp member comprisestwo associated part-s 2| and 22 arranged longitudinally of the pipe'land corresponds with the pipe clamp member l of Figures 1 and 2. Thepipe clamp member comprising the parts 2| and 22 is provided withcontinuing concave pipe engaging surfaces 23 and 24, and the part 22 isprovided with a convex surface 25 eccentric to the axis of the pipeengagingsurfaces 23 and 24 and engageable in the relatively largeopening |2 of the support J3 through which the pipe extends.

The parts 2| and 22 are interlockingly engaged longitudinally of thepipe axis by means of extensions 26 on the part 22 and provided withradially extending interlock ears 21 interlockingly engageable with aflange portion 28 of the part 2|, this interlocking engagement beingdisparts 2| and'22. The flange 'p'o'rt'ion'28 of the part 2| providesashamd er surface'23' and the part 22 is provided'with a shouldersurface 3|, these shoulder surfaces 29 and'3l opposing each other andbeing 'e'ngageable w'ith opposite surfaces of the support 13inopposition to the aforesaid interlock means to position the clamp membercomprising the parts 2| and 22, longitudinally of the pipe axis,

the 'rel'easeable interlocking engagement or the parts 2| andfacilitating engagement of this clamp member in'the support opening.

A second pipe c1a""' member32 is orgenerany crescent shape and providesa concavep'ipe'engaging surface 33 to the end that the pipe 1 may beengaged between the clamp member 32 and 'the clamp "ember comprising theparts 2| and 22, thes'e'clamp'membersbeing relatively movable angularlyabout the'axis of the pipe'engages therebetween. The clamp membertz alsoprovides a convex surface 34 eccentric" to the axis of the pipeeng'agingsurface thereof,and is provided witha' surface 35 facing andsp'aced fromthe concave pipe engaging surface 33, the surface '35 being engageableon a'convex cam surface 36 on the part 2| to effect relative pipeclamping movement of the clamp memberswith relative angular movementthereof about the axis of the pipe 1 therebetween.

Thepipe clamp members of Figures 3 to Ginclusive are engageable in thesupport opening '|2-' of the support l3 through which the pipe extends,the opposite engaging Surfaces 23-44 and 25 of the clamp membercomprising the parts 2| and 22 being-spaced differently from theopposite engaging surfaces 33 and 34 "of the clamp member 32 whereby tosimultaneously expand the clamp members in the opening l2 and tocontractthe same on the pipe with relative angular movement of the clampmembers. The part 2| is provided with opposing cam shoulders 31 engagingthe clamp member 32 therebetween to position this clamp memberlongitudinally of the pipe axis, the shoulders 31 being disengageablewith relative angular movement of the clamp members i to non-clampingposition. Engagement of the cam surfaces 35 and 36 serves to maintainthe part 2| radially against the pipe and thus maintains the interlockengagement of the parts 2| and 22, the surfaces 35 and 36 beingdisengaged in the non-clamping position of the clamp members to permitengagement and disengagement of the interlock engagement.

One end of the pipe clampmember 32 is provided with an angularlyextending shank 38 which is provided with ratchet teeth 39 spacedtherealong, and thisshank engages through an apertured ratchet lug 4| onthe part 2| for selective engagement of the teeth 39 therewith to securethe pipe'clamp members in clamping position. Cotter pins 42 are insertedin holes 43 through the shank 38 to maintain the shank againstdisplacement from its instant clamping position.

Having thus described my invention, I do not wish to be limited to theprecise details described, as changes may readily be made withoutdeparting from the spirit of my invention, but having thus described myinvention I claim as new and desire to secure by Letters Patent thefollowing:

1. In a pipe clamp members accommodating a pipe therebetween, meansadapted to effect clamping'of said pipe between said clamp members withrelative angular movement thereof, and .ratchet locking means operativeto retain said clamp members in clamping relation. e

2. In a pipe clamp the'combinationl of pipe clamp members accommodatinga pip l therebetween, means adaptedto effect clamping of said pipebetween said clam'p memberslwith relative angular movement thereof, andratchet locking means operative to retain said clamp members in clampingrelation and comprising cooperating ratchet members one of which isprovided with a plurality of ratchet teeth spaced angularly about theaxis of said pipe for selective engagement with another of said ratchet:members.

3. In a pipe 'clamp the combination of pipe clamp members accommodatingapipe therebetween, means adapted to effect clamping ofsaid pipe betweensaid clamp members with relative angular movement thereof, and ratchetlocking means operative between said. clamp members to retain saidclampmembers in clamping relation and comprising cooperating ratchetvmembers one of which comprises a 'multietoothed shank on one of saidclamp members and extendingangularly about the axis of .saidlpipe forselective engagement with another o'f-said ratchet members. e

'4. In a pipe clamp, the combination ofpipe clamp members'provide'dfwith inner concave pipe engaging surfaces accommodating apipe therebetween and engageable .in' a relatively large circularopening of a support through which Ithepipe extends and. provided withouter support engaging surfaces engageable against the edge of saidopening, the pipe and support engaging surfaces of oneiclampmemberfbeing spaced diiferently than those of the other lclamp memberradially of saidipipe engaging.v surfaces whereby to effect clampingengagement within said opening between said. support, said clamp membersand said pipe withrela'tive angularv movement of said clamp membersaboutsaid pipe, opposing shoulderson one of saidfclamp members andspaced axially of thepipe engag ing surfacelthere'of and. engaging saidsupport clamp the combination of pipe therebetween to position thisclamp member on the support longitudinally of the pipe axis, addi-'dating a pipe therebetween and engageable in a relatively large circularopening of a support through which the pipe extends and provided withouter support engaging surfaces engageable against the edge of saidopening, the'pipe and support engaging surfaces of one clamp memberbeing spaced differently than those of the other clamp member radiallyof said pipe engaging surfaces whereby to effect clamping engagementwithin said opening between said support, said clamp members and saidpipe with relative angular movement of said clamp members about saidpipe, a third clamp member provided with an inner concave pipe engagingsurface, opposing interlock shoulders respectively on said first andthird clamp members and facing axially of said pipe and releasablyengageable to prevent separation of these clamp members, additionalopposing shoulders respectively on said first and third clamp membersand facing axiallyof said pipe and engageable with opposite surfaces ofsaid support in opposing relation with engagement of said firstmentioned shoulders, and

means operative between said second and third clamp members to clampthese clamp members on said pipe.

6. In a pipe clamp, the combination of first and second pipe clampmembers provided with inner concave pipe engaging surfaces accommodatinga pipe therebetween and engageable in a relatively large circularopening of a support through which the pipe extends and provided withouter support engaging surfaces engageable against the edge of saidopening, the pipe and. support engaging surfaces of one clamp memberbeing spaced differently than those of the other clamp member radiallyof said pipe engaging surfaces, whereby to effect clamping engagementwithin said opening between said support, said clamp members and saidpipe with relative angular movement of said clamp members about saidpipe, a third clamp member provided with an inner concave pipe engagingsurface, opposing interlock shoulders respectively on said first andthird clamp members and facing axially of said pipe and releasablyengageable to prevent separation of these clamp members, additionalopposing shoulders respectively on said first and third clamp membersand facing axially of said pipe and engageable with opposite surfaces ofsaid support in opposing relation with engagement of said firstmentioned shoulders, and cam means extending angularly about said pipeand operative between said second and third clamp members with relativeangular movement thereof about said pipe to clamp these clamp membersupon said pipe simultaneously with said relative angular clampingmovement of said first and second clamping members.

JAY V. WESCO'I' I.

